Both ASBA (Application Supported by Blocked Amount) and UPI (Unified Payments Interface) are SEBI-approved payment methods for applying to IPOs in India. Both work the same way at a basic level — your money is blocked, not debited, until allotment is finalised. The choice between them depends on application size, your preference for speed vs flexibility, and which platform you use.
Quick Comparison Table
| Aspect | UPI (UPI-ASBA) | ASBA (Net Banking) |
|---|---|---|
| Maximum application size | Rs 5,00,000 per transaction | No specified upper limit |
| Eligible categories | Retail individual investors and Small NII (applications up to Rs 5 lakh) | All categories — Retail, Small NII, Big NII, Employees, HUF (anchor investors apply via separate process) |
| Where you apply | Broker app (Zerodha, Groww, Upstox, Angel One, etc.) | Bank's net banking portal — IPO / ASBA section |
| Approval mechanism | UPI mandate sent to your UPI app — must be approved actively | Funds blocked automatically by your bank when application is submitted |
| Mandate / blocking deadline | UPI mandate must be approved by 5:00 PM on the closing day of the IPO | Application must be submitted within bank's IPO window (typically by closing day end) |
| Speed | Faster — application takes a few minutes via app | Slower — net banking flow has more steps |
| Refund / unblock timing | Auto-released after allotment finalisation (typically T+1 / T+2) | Same — auto-released after allotment |
| Popularity in 2026 | Used by 80%+ of retail applications | Used by HNIs, BIG NII, and retail investors who prefer net banking |
What is UPI-Based IPO Application?
UPI-based IPO application is the modern, app-driven way to apply. You submit the application through your
broker's app (or web platform), enter your UPI ID (e.g., yourname@upi), and
your broker forwards the application to the registrar via the exchange. A UPI mandate
request is then sent to your UPI app (Google Pay, PhonePe, BHIM, Paytm, etc.) — you must approve it for
the funds to be blocked. The application is rejected if the mandate is not approved before the deadline.
UPI is suitable for retail and Small NII investors applying up to Rs 5,00,000 per transaction (a limit raised by SEBI from the earlier Rs 2 lakh cap to support larger applications). Big NII applicants (applications above Rs 10 lakh) cannot use UPI and must apply via ASBA.
UPI Application — Step by Step
- Open your broker app and navigate to the IPO section
- Select the IPO from the list of currently open issues
- Enter the number of lots — for mainboard book-built IPOs, retail investors should select the cut-off price option
- Enter your UPI ID (the bank account linked to it must be in your name and tied to the same PAN as your demat)
- Submit the application — the broker forwards it to the registrar
- Approve the UPI mandate immediately when it arrives in your UPI app
- Funds are blocked in your bank account until allotment
What is ASBA (Application Supported by Blocked Amount)?
ASBA is the original SEBI-mandated IPO application method (in place since 2008). With ASBA, you log in to your bank's net banking portal, navigate to the IPO / ASBA section, and submit the application directly. Your bank automatically blocks the required amount in your account when you submit — no separate mandate approval is needed. The blocked amount continues to earn interest in your savings account until allotment is finalised.
ASBA is available to all investor categories including HNI / Big NII applications above Rs 5 lakh, employee category, HUF accounts, and Foreign Portfolio Investors. Anchor investors apply through a separate process and do not use ASBA or UPI.
ASBA Application — Step by Step
- Log in to your bank's net banking portal
- Navigate to the IPO / ASBA section (usually under "Investments" or "e-Services")
- Select the IPO from the list of issues currently open for ASBA
- Enter the number of lots and bid price (or cut-off for retail)
- Enter your DP ID and Client ID (your demat account identifiers)
- Submit the application — your bank automatically blocks the required amount
- Funds remain blocked (still earning interest) until allotment is finalised
Which Method Should You Use?
Use UPI if:
- You are a retail investor (applications up to Rs 2 lakh) or Small NII (Rs 2 lakh to Rs 5 lakh)
- You prefer applying through your broker app
- You want a faster, mobile-friendly application flow
- Your bank account is linked to UPI (most are)
Use ASBA if:
- You are an HNI / Big NII applying for more than Rs 5 lakh — UPI is not available for these amounts
- You apply through a HUF account or other category not supported by UPI on your broker platform
- You prefer the familiarity of net banking
- Your demat broker doesn't offer a smooth UPI flow for IPOs
Rules That Apply to Both Methods
Regardless of which method you choose, these SEBI rules apply uniformly:
- One application per PAN per IPO — submitting multiple applications under the same PAN (across different brokers or banks) results in all applications being rejected by the registrar.
- Funds are blocked, not debited — money stays in your account, just locked, until allotment is finalised. If you don't get shares, the block is released and the money is fully available again.
- Bank account PAN must match demat PAN — using a spouse's or family member's UPI ID / bank account is not permitted; the registrar matches PAN strictly.
- Cut-off price option is available only for retail investors in mainboard book-built IPOs — it auto-bids at the upper price band, simplifying the process.
- Allotment is by SEBI lottery for oversubscribed retail issues — applying through UPI vs ASBA does not change your odds; both are equal.
Common Mistakes and How to Avoid Them
- Forgetting to approve the UPI mandate. The mandate notification can be missed in a busy notifications inbox. Open your UPI app within an hour of submitting and approve immediately.
- Using a UPI ID linked to a different PAN. Common for joint accounts or family-shared phones. Always ensure the UPI ID's underlying bank account is in your name and tied to your PAN.
- Submitting after 4:30 PM on closing day. The 5:00 PM mandate deadline doesn't leave much room for delay. Apply at least a day early — Day 1 or Day 2 is the safest.
- Applying for multiple lots without checking funds. If you select 3 lots but your account has funds for only 2, the mandate fails entirely (it's all-or-nothing).
- Submitting through 2 brokers with the same PAN. A common assumption is "more applications = more chances." Wrong — the registrar deduplicates and rejects all of them.
Both UPI and ASBA Use the Blocked-Amount Mechanism
A common misconception is that UPI and ASBA are fundamentally different mechanisms. They are not — both work on the same blocked-amount principle. The difference is purely operational: UPI uses an app-driven mandate flow; ASBA uses a net-banking-driven block. In both cases, your money stays in your account, earns interest (in the case of ASBA where the bank account is a savings account), and gets released automatically if you don't receive an allotment.
From a pure investor outcome perspective — allotment chances, refund timing, and listing-day participation — UPI and ASBA are identical. Choose based on convenience and application size.
Key Takeaways
- UPI works for retail and Small NII applications up to Rs 5 lakh; ASBA works for all categories with no upper limit.
- UPI is faster and more convenient via your broker app; ASBA is the universal fallback through net banking.
- Both methods block rather than debit your funds — money stays in your account and earns interest.
- The 5:00 PM mandate deadline on the IPO closing day is the hard cutoff for UPI applications. Apply early to avoid risk.
- One application per PAN regardless of method — duplicate applications result in all being rejected.
Last updated: May 2026. SEBI rules around UPI and ASBA limits and timelines may be revised periodically; verify the current limits on the official SEBI website before applying for high-value IPOs.